<?php 

// $name = '10';


// $name1 = &$name;


// $name1 = 12;

// $name =20;




// echo($name);
// echo $name1;

// var_dump($name);

// print_r($name);

// print($name);


// $a= "hello";
// // $b = "world";
// $$a = 'abc';

// echo $hello;


var_dump($_POST); 
// 接收路径（URL）上的传参






 ?>


 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
 <html lang="en">
 <head>
 	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
 	<title>Document</title>
 </head>
 <body>
 	<form action="./add.php" method="post">
 		<input type="text" name="username">
 		<input type="password" name="password">
 		<input type="submit" value="登录"> 
 	</form>
 </body>
 </html>